PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-15:12:50
G01     72.7           33.1               10.5 +/-    0.91      17.2 +/-    0.91  0.030 / 0.040
G07     136.5          32.5               13.4 +/-    0.80      22.2 +/-    0.80  0.030 / 0.040
G11     54.4           31.3                9.3 +/-    0.62      15.9 +/-    0.62  0.050 / 0.080
G13     276.3          37.8               12.0 +/-    1.04      18.1 +/-    1.04  0.050 / 0.080
G15     306.2          13.6                8.2 +/-    1.43      21.0 +/-    1.43  0.040 / 0.100
G17     230.6          67.7               12.6 +/-    0.39      13.5 +/-    0.39  0.050 / 0.090
G18     50.1           18.8                8.0 +/-    0.97      18.2 +/-    0.97  0.070 / 0.140
G19     222.9          37.6               14.3 +/-    1.49      21.6 +/-    1.49  0.060 / 0.130
G28     16.5           59.7               10.9 +/-    0.59      12.4 +/-    0.59  0.040 / 0.060
G30     133.7          64.4               13.1 +/-    0.59      14.3 +/-    0.59  0.030 / 0.060