PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-15:57:50
G01     228.0          18.5               12.6 +/-    2.78      28.7 +/-    2.78  0.090 / 0.200
G03     284.8          69.8                8.1 +/-    1.10       8.6 +/-    1.10  0.080 / 0.220
G14     83.6           27.8                7.1 +/-    0.68      13.0 +/-    0.68  0.030 / 0.040
G16     147.8          43.4               13.0 +/-    1.51      17.9 +/-    1.51  0.030 / 0.040
G22     210.3          71.1                9.0 +/-    0.99       9.5 +/-    0.99  0.040 / 0.040
G23     307.6          38.6                7.3 +/-    1.22      10.8 +/-    1.22  0.030 / 0.040
G26     98.9           53.5                9.9 +/-    0.85      12.0 +/-    0.85  0.090 / 0.100
G31     44.9           32.5                7.3 +/-    1.29      12.1 +/-    1.29  0.060 / 0.100