PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-19:57:50
G07     324.7          54.6               12.1 +/-    0.90      14.5 +/-    0.90  0.030 / 0.060
G08     114.3          50.2               13.7 +/-    0.61      17.2 +/-    0.61  0.040 / 0.070
G09     209.8          79.5               13.2 +/-    0.91      13.4 +/-    0.91  0.040 / 0.080
G16     45.3           11.1                9.8 +/-    2.40      26.6 +/-    2.40  0.040 / 0.080
G23     152.5          44.4               12.7 +/-    0.66      17.3 +/-    0.66  0.030 / 0.070
G27     59.9           33.7               10.9 +/-    0.73      17.7 +/-    0.73  0.030 / 0.060
G28     233.5          25.8               13.6 +/-    2.16      26.0 +/-    2.16  0.100 / 0.190
G30     299.3          33.9               11.2 +/-    1.74      18.2 +/-    1.74  0.080 / 0.210