PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-20:28:10
G01     237.2          27.1                9.9 +/-    2.51      18.4 +/-    2.51  0.090 / 0.160
G03     309.8          56.9                7.5 +/-    0.43       8.8 +/-    0.43  0.110 / 0.170
G14     74.0           32.0                8.9 +/-    0.42      14.9 +/-    0.42  0.040 / 0.070
G16     157.5          30.0               10.4 +/-    0.97      18.3 +/-    0.97  0.040 / 0.060
G18     208.5          15.5                8.9 +/-    0.90      21.9 +/-    0.90  0.080 / 0.160
G22     269.3          75.0                9.7 +/-    0.64      10.0 +/-    0.64  0.100 / 0.160
G23     295.8          26.1                8.9 +/-    2.03      17.1 +/-    2.03  0.060 / 0.120
G26     125.8          47.7               11.3 +/-    1.20      14.6 +/-    1.20  0.070 / 0.150
G31     39.9           49.9                7.6 +/-    0.36       9.7 +/-    0.36  0.030 / 0.030
G32     87.7           15.7                7.9 +/-    1.03      19.3 +/-    1.03  0.040 / 0.040