PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-18:13:00
G02     224.0          65.5               10.0 +/-    0.99      10.8 +/-    0.99  0.050 / 0.080
G06     45.4           65.4                8.7 +/-    0.57       9.5 +/-    0.57  0.060 / 0.090
G12     321.7          46.8                9.5 +/-    0.88      12.5 +/-    0.88  0.040 / 0.050
G17     63.8           27.4                8.8 +/-    1.55      16.4 +/-    1.55  0.040 / 0.050
G19     44.7           46.8                8.9 +/-    1.06      11.7 +/-    1.06  0.030 / 0.030
G24     253.8          39.3               12.0 +/-    2.49      17.7 +/-    2.49  0.030 / 0.030