PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-18:42:40
G02     254.1          77.4                9.4 +/-    0.50       9.6 +/-    0.50  0.070 / 0.210
G05     170.1          20.1               11.8 +/-    1.47      26.0 +/-    1.47  0.060 / 0.180
G06     40.3           51.8                9.3 +/-    0.65      11.5 +/-    0.65  0.030 / 0.040
G12     322.1          60.6                9.0 +/-    1.36      10.2 +/-    1.36  0.030 / 0.040
G17     74.9           19.3                9.5 +/-    0.79      21.2 +/-    0.79  0.140 / 0.250
G19     59.4           38.3                9.5 +/-    0.66      14.2 +/-    0.66  0.100 / 0.240
G24     238.9          31.8               13.8 +/-    1.41      23.3 +/-    1.41  0.030 / 0.040
G25     317.3          16.7                8.7 +/-    1.71      20.7 +/-    1.71  0.030 / 0.040