PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/14-19:57:50
G01     124.5          13.8               14.8 +/-    2.69      38.0 +/-    2.69  0.060 / 0.030
G07     61.3           69.2               13.7 +/-    0.26      14.5 +/-    0.26  0.070 / 0.050
G08     50.2           40.8               10.8 +/-    0.86      15.5 +/-    0.86  0.230 / 0.120
G09     178.4          33.3               12.8 +/-    0.91      21.0 +/-    0.91  0.250 / 0.140
G11     117.0          36.7               13.7 +/-    0.83      21.1 +/-    0.83  0.030 / 0.010
G13     320.4          13.9               10.1 +/-    2.59      25.8 +/-    2.59  0.030 / 0.010
G17     201.9          14.1               18.0 +/-    2.34      45.9 +/-    2.34  0.050 / 0.010
G18     101.3          18.1               11.7 +/-    1.87      27.1 +/-    1.87  0.040 / 0.010
G28     282.1          54.8               13.0 +/-    2.78      15.5 +/-    2.78  0.140 / 0.180
G30     340.4          64.7               13.2 +/-    0.37      14.5 +/-    0.37  0.110 / 0.250