PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-16:57:50
G07     38.8           69.8               13.8 +/-    0.95      14.6 +/-    0.95  0.220 / 0.180
G08     55.2           44.5               12.4 +/-    0.79      16.8 +/-    0.79  0.040 / 0.050
G09     178.6          40.4               14.3 +/-    2.36      20.7 +/-    2.36  0.030 / 0.040
G11     123.4          32.7               15.1 +/-    1.89      25.0 +/-    1.89  0.030 / 0.040
G18     107.8          14.6               13.6 +/-    1.84      34.3 +/-    1.84  0.030 / 0.040
G27     37.7           10.2               10.5 +/-    3.17      29.2 +/-    3.17  0.040 / 0.050
G28     270.4          50.8               12.8 +/-    1.23      15.9 +/-    1.23  0.100 / 0.130
G30     329.2          57.7               12.1 +/-    0.94      14.1 +/-    0.94  0.090 / 0.160