PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-17:43:10
G07     23.4           69.0               11.7 +/-    0.97      12.5 +/-    0.97  0.060 / 0.060
G08     61.5           48.4               11.0 +/-    0.71      14.2 +/-    0.71  0.050 / 0.060
G09     179.6          46.2               13.8 +/-    1.14      18.2 +/-    1.14  0.040 / 0.050
G11     128.5          29.3               13.3 +/-    1.39      23.6 +/-    1.39  0.050 / 0.050
G18     112.3          11.9               13.3 +/-    2.61      35.7 +/-    2.61  0.030 / 0.030
G23     158.7          12.1               14.1 +/-    1.41      37.5 +/-    1.41  0.030 / 0.040
G27     39.2           14.2                7.7 +/-    2.89      19.4 +/-    2.89  0.200 / 0.180
G28     263.4          47.8               12.3 +/-    3.64      15.9 +/-    3.64  0.160 / 0.210
G30     324.5          54.0               10.8 +/-    0.43      13.0 +/-    0.43  0.190 / 0.300