PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-14:58:00
G02     224.0          67.2               11.1 +/-    0.88      11.9 +/-    0.88  0.060 / 0.080
G06     45.7           68.5               11.1 +/-    0.52      11.8 +/-    0.52  0.070 / 0.090
G12     320.7          43.1               10.9 +/-    1.28      15.1 +/-    1.28  0.070 / 0.080
G17     65.7           25.2                9.8 +/-    1.00      19.1 +/-    1.00  0.040 / 0.060
G19     50.4           42.4                9.2 +/-    0.57      12.8 +/-    0.57  0.030 / 0.030
G24     257.3          39.1               12.8 +/-    0.75      18.8 +/-    0.75  0.020 / 0.030