PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-19:42:50
G02     253.0          77.5               11.8 +/-    0.77      12.0 +/-    0.77  0.060 / 0.220
G05     170.1          19.8               14.2 +/-    1.54      31.4 +/-    1.54  0.070 / 0.200
G06     40.3           52.6               11.6 +/-    0.61      14.1 +/-    0.61  0.040 / 0.060
G12     322.0          59.3                9.6 +/-    1.06      11.0 +/-    1.06  0.040 / 0.040
G17     74.1           20.3               10.6 +/-    0.55      23.1 +/-    0.55  0.030 / 0.040
G19     59.1           38.4               10.4 +/-    0.62      15.5 +/-    0.62  0.030 / 0.040
G24     239.8          32.3               14.2 +/-    1.02      23.7 +/-    1.02  0.070 / 0.100
G25     317.3          15.9                8.5 +/-    1.96      20.6 +/-    1.96  0.080 / 0.140