PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-19:43:10
G01     69.9           32.9               13.2 +/-    0.64      21.9 +/-    0.64  0.090 / 0.290
G07     137.9          30.7               16.1 +/-    1.21      27.8 +/-    1.21  0.090 / 0.370
G11     53.7           31.0               12.1 +/-    0.98      20.8 +/-    0.98  0.030 / 0.050
G13     273.7          37.4               16.1 +/-    0.70      24.4 +/-    0.70  0.030 / 0.050
G15     302.3          15.2               10.0 +/-    2.46      24.8 +/-    2.46  0.060 / 0.110
G17     233.5          66.3               17.0 +/-    1.29      18.3 +/-    1.29  0.060 / 0.130
G18     48.7           18.1               10.3 +/-    1.00      23.7 +/-    1.00  0.040 / 0.060
G19     224.8          41.3               16.1 +/-    1.22      22.9 +/-    1.22  0.040 / 0.050
G28     21.4           59.0               14.4 +/-    0.34      16.5 +/-    0.34  0.070 / 0.110
G30     136.3          60.1               16.3 +/-    0.66      18.5 +/-    0.66  0.070 / 0.110