PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-22:12:50
G01     69.0           32.7               15.4 +/-    0.78      25.5 +/-    0.78  0.130 / 0.290
G07     138.4          30.0               19.5 +/-    1.05      34.1 +/-    1.05  0.090 / 0.260
G11     53.8           31.2               13.8 +/-    1.28      23.5 +/-    1.28  0.040 / 0.060
G13     272.9          37.2               17.2 +/-    2.52      26.3 +/-    2.52  0.040 / 0.070
G15     300.9          15.7               12.5 +/-    1.47      30.5 +/-    1.47  0.060 / 0.090
G17     234.4          65.9               19.1 +/-    0.79      20.8 +/-    0.79  0.050 / 0.080
G18     48.2           17.8               12.3 +/-    2.68      28.6 +/-    2.68  0.100 / 0.180
G19     225.5          42.9               20.1 +/-    1.43      27.9 +/-    1.43  0.090 / 0.200
G28     23.2           58.7               14.7 +/-    1.57      16.9 +/-    1.57  0.030 / 0.030
G30     136.9          58.0               19.6 +/-    0.66      22.7 +/-    0.66  0.030 / 0.040