PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-19:57:50
G01     235.7          25.4               10.4 +/-    1.74      20.1 +/-    1.74  0.030 / 0.030
G03     306.4          60.3                9.4 +/-    1.02      10.7 +/-    1.02  0.030 / 0.020
G14     75.5           32.0                8.9 +/-    1.10      14.9 +/-    1.10  0.120 / 0.180
G16     156.8          32.4               14.5 +/-    1.81      24.3 +/-    1.81  0.110 / 0.170
G22     258.9          75.8               10.0 +/-    0.41      10.3 +/-    0.41  0.060 / 0.070
G23     298.6          29.5               11.5 +/-    1.43      20.3 +/-    1.43  0.040 / 0.070
G26     118.4          49.5               12.4 +/-    0.58      15.8 +/-    0.58  0.060 / 0.090
G31     41.4           43.2                8.3 +/-    1.27      11.5 +/-    1.27  0.060 / 0.120
G32     90.3           13.2               10.3 +/-    3.05      26.7 +/-    3.05  0.080 / 0.130