PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-15:58:10
G01     74.4           33.2                7.3 +/-    0.67      12.0 +/-    0.67  0.050 / 0.090
G07     135.6          33.9               11.1 +/-    1.26      18.0 +/-    1.26  0.050 / 0.080
G11     55.7           32.5                7.5 +/-    1.23      12.4 +/-    1.23  0.040 / 0.030
G13     278.2          37.9               11.1 +/-    0.88      16.8 +/-    0.88  0.030 / 0.030
G15     307.0          13.4                8.3 +/-    2.85      21.5 +/-    2.85  0.170 / 0.250
G17     228.3          65.7               11.1 +/-    0.99      12.0 +/-    0.99  0.130 / 0.200
G18     51.4           19.5                8.1 +/-    4.23      18.1 +/-    4.23  0.070 / 0.090
G19     222.0          36.5               11.5 +/-    1.94      17.8 +/-    1.94  0.190 / 0.260
G28     14.0           60.0               10.6 +/-    1.36      12.1 +/-    1.36  0.060 / 0.090
G30     131.9          65.4               11.3 +/-    0.47      12.3 +/-    0.47  0.050 / 0.090