PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-17:42:50
G02     214.6          55.5               14.0 +/-    1.40      16.6 +/-    1.40  0.050 / 0.080
G06     61.9           74.5               13.0 +/-    0.69      13.5 +/-    0.69  0.040 / 0.070
G12     318.9          37.4               10.1 +/-    0.93      15.3 +/-    0.93  0.080 / 0.320
G17     55.6           33.5               10.2 +/-    0.70      16.7 +/-    0.70  0.070 / 0.250
G19     32.4           53.2               11.9 +/-    0.41      14.5 +/-    0.41  0.050 / 0.060
G24     266.9          42.4               11.2 +/-    2.33      15.7 +/-    2.33  0.040 / 0.060
G28     120.8          15.7               10.6 +/-    1.57      25.9 +/-    1.57  0.060 / 0.090