PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-14:12:40
G02     227.6          66.1                9.3 +/-    0.92      10.1 +/-    0.92  0.060 / 0.080
G06     43.3           63.8                8.4 +/-    0.48       9.3 +/-    0.48  0.060 / 0.070
G12     321.8          48.5                7.7 +/-    0.47       9.9 +/-    0.47  0.040 / 0.040
G17     66.6           24.6                6.8 +/-    1.91      13.5 +/-    1.91  0.050 / 0.040
G19     46.2           46.2                7.9 +/-    0.88      10.5 +/-    0.88  0.040 / 0.070
G24     248.9          38.0                9.7 +/-    0.95      14.5 +/-    0.95  0.040 / 0.050