PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-15:43:10
G01     62.7           31.4                9.1 +/-    0.69      15.5 +/-    0.69  0.040 / 0.050
G07     141.2          24.6               14.2 +/-    1.27      28.1 +/-    1.27  0.050 / 0.050
G11     49.2           25.1                8.6 +/-    1.22      16.8 +/-    1.22  0.050 / 0.060
G13     265.2          36.1               12.6 +/-    0.72      19.6 +/-    0.72  0.050 / 0.050
G15     298.4          15.2                7.3 +/-    2.58      18.1 +/-    2.58  0.070 / 0.080
G17     250.6          74.7               12.9 +/-    0.51      13.4 +/-    0.51  0.060 / 0.070
G18     43.7           14.1                7.0 +/-    1.79      17.8 +/-    1.79  0.040 / 0.140
G19     229.8          45.6               11.1 +/-    0.92      14.9 +/-    0.92  0.040 / 0.140
G28     31.6           57.5               10.8 +/-    0.67      12.5 +/-    0.67  0.080 / 0.230
G30     142.1          55.6               11.0 +/-    1.36      13.0 +/-    1.36  0.070 / 0.220