PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-21:58:10
G07     334.4          58.4                9.6 +/-    0.40      11.1 +/-    0.40  0.100 / 0.150
G08     100.9          52.8                9.5 +/-    0.39      11.6 +/-    0.39  0.120 / 0.160
G09     192.9          73.1               11.5 +/-    0.63      12.0 +/-    0.63  0.070 / 0.110
G11     147.4          13.0               13.6 +/-    2.17      35.4 +/-    2.17  0.070 / 0.090
G23     155.4          38.6               11.2 +/-    0.90      16.7 +/-    0.90  0.030 / 0.030
G27     53.2           30.3                8.4 +/-    2.00      14.5 +/-    2.00  0.040 / 0.040
G28     238.7          31.3               11.9 +/-    1.58      20.2 +/-    1.58  0.130 / 0.260
G30     305.6          39.4                8.8 +/-    1.72      13.0 +/-    1.72  0.110 / 0.280