PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-16:28:00
G07     328.9          56.4               10.3 +/-    0.41      12.0 +/-    0.41  0.040 / 0.040
G08     107.0          51.6               11.0 +/-    0.56      13.6 +/-    0.56  0.040 / 0.040
G09     196.1          76.1               11.3 +/-    0.39      11.6 +/-    0.39  0.080 / 0.100
G11     148.0          11.5               13.5 +/-    3.58      36.4 +/-    3.58  0.080 / 0.100
G23     153.2          39.4               11.5 +/-    0.46      16.8 +/-    0.46  0.030 / 0.040
G27     57.0           32.6                8.4 +/-    1.22      13.9 +/-    1.22  0.030 / 0.040
G28     235.7          28.0               10.5 +/-    2.25      19.1 +/-    2.25  0.090 / 0.150
G30     300.7          34.3                8.9 +/-    0.95      14.3 +/-    0.95  0.160 / 0.170