PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-04:27:40
G08     294.4          22.4                8.1 +/-    0.69      16.9 +/-    0.69  0.080 / 0.040
G10     12.5           62.8                6.1 +/-    0.92       6.8 +/-    0.92  0.130 / 0.070
G14     230.0          47.1               11.1 +/-    2.47      14.6 +/-    2.47  0.030 / 0.010
G18     317.8          11.4               -4.0 +/-   23.38     -10.8 +/-   23.38  0.030 / 0.010
G20     66.5           51.9                6.7 +/-    1.17       8.3 +/-    1.17  0.040 / 0.090
G21     147.2          39.8                8.1 +/-    0.89      11.8 +/-    0.89  0.040 / 0.090
G24     55.4           25.1                6.9 +/-    2.30      13.4 +/-    2.30  0.070 / 0.120
G27     254.4          31.6                9.8 +/-    2.60      16.6 +/-    2.60  0.080 / 0.150
G32     245.0          66.2                7.1 +/-    0.68       7.7 +/-    0.68  0.120 / 0.070