PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-15:43:10
G01     73.6           33.2                9.3 +/-    0.62      15.3 +/-    0.62  0.040 / 0.040
G07     136.0          33.3               10.9 +/-    1.33      17.9 +/-    1.33  0.050 / 0.050
G11     55.2           32.0                7.5 +/-    0.74      12.5 +/-    0.74  0.050 / 0.150
G13     277.4          37.9               11.6 +/-    1.12      17.5 +/-    1.12  0.120 / 0.250
G15     306.6          13.5                8.4 +/-    1.47      21.6 +/-    1.47  0.060 / 0.130
G17     229.3          66.5               12.4 +/-    1.01      13.4 +/-    1.01  0.080 / 0.130
G18     50.8           19.2                7.4 +/-    0.95      16.7 +/-    0.95  0.050 / 0.090
G19     222.4          37.0               14.5 +/-    0.70      22.2 +/-    0.70  0.060 / 0.090
G28     15.1           59.9                9.8 +/-    0.79      11.2 +/-    0.79  0.050 / 0.050
G30     132.7          64.9               10.8 +/-    0.65      11.8 +/-    0.65  0.040 / 0.060