PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-16:42:30
G02     224.0          64.7                9.1 +/-    0.82      10.0 +/-    0.82  0.150 / 0.090
G06     45.4           65.1                9.1 +/-    0.54       9.9 +/-    0.54  0.140 / 0.090
G12     322.0          47.8               10.1 +/-    0.76      13.1 +/-    0.76  0.030 / 0.050
G17     64.3           26.5                6.6 +/-    0.79      12.4 +/-    0.79  0.040 / 0.050
G19     44.1           47.2                7.8 +/-    1.30      10.2 +/-    1.30  0.040 / 0.030
G24     253.4          39.3               11.3 +/-    2.80      16.6 +/-    2.80  0.040 / 0.030