PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-16:27:50
G01     59.5           30.0                7.5 +/-    0.82      13.1 +/-    0.82  0.060 / 0.230
G07     141.5          18.1                9.6 +/-    1.31      22.1 +/-    1.31  0.080 / 0.230
G11     47.8           23.9                6.1 +/-    1.05      12.2 +/-    1.05  0.040 / 0.050
G13     261.5          36.1               10.2 +/-    0.81      15.9 +/-    0.81  0.040 / 0.050
G15     293.4          16.5                7.0 +/-    1.63      16.7 +/-    1.63  0.070 / 0.160
G17     253.3          74.9               10.2 +/-    0.41      10.6 +/-    0.41  0.070 / 0.200
G18     41.4           12.1                6.7 +/-    1.90      17.9 +/-    1.90  0.060 / 0.110
G19     231.8          51.7               12.5 +/-    0.76      15.5 +/-    0.76  0.080 / 0.100
G28     25.7           59.3                7.8 +/-    0.66       8.9 +/-    0.66  0.020 / 0.030
G30     143.2          49.8                9.7 +/-    0.99      12.2 +/-    0.99  0.030 / 0.030