PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-21:13:00
G07     303.3          44.4               11.5 +/-    1.68      15.6 +/-    1.68  0.080 / 0.160
G08     133.8          37.8               16.5 +/-    0.76      24.9 +/-    0.76  0.090 / 0.190
G09     311.0          74.7               10.9 +/-    0.68      11.2 +/-    0.68  0.040 / 0.080
G16     41.7           27.4                9.3 +/-    2.30      17.2 +/-    2.30  0.050 / 0.080
G23     140.9          65.0               13.4 +/-    1.03      14.7 +/-    1.03  0.040 / 0.080
G27     82.0           36.9               11.5 +/-    1.05      17.7 +/-    1.05  0.040 / 0.090
G28     222.8          10.7               -1.7 +/-   27.57      -4.7 +/-   27.57  0.220 / 0.400
G30     285.2          23.6               12.6 +/-    2.00      25.4 +/-    2.00  0.160 / 0.480