PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-15:28:00
G07     359.4          65.6               11.8 +/-    0.32      12.8 +/-    0.32  0.040 / 0.040
G08     74.2           51.9               11.4 +/-    0.79      14.1 +/-    0.79  0.030 / 0.040
G09     180.6          56.4               13.2 +/-    0.53      15.6 +/-    0.53  0.020 / 0.030
G11     135.7          23.1               10.6 +/-    1.70      21.7 +/-    1.70  0.030 / 0.030
G23     158.2          22.9               10.8 +/-    1.70      22.1 +/-    1.70  0.070 / 0.080
G27     43.5           21.9               10.1 +/-    1.91      21.2 +/-    1.91  0.050 / 0.060
G28     251.6          41.1               13.3 +/-    2.80      19.0 +/-    2.80  0.090 / 0.170
G30     314.7          45.9               11.4 +/-    0.62      15.2 +/-    0.62  0.070 / 0.160