PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-17:43:00
G01     246.1          32.6               10.2 +/-    1.25      16.9 +/-    1.25  0.030 / 0.050
G03     314.2          51.5                7.6 +/-    2.34       9.4 +/-    2.34  0.040 / 0.050
G11     236.2          10.3               10.2 +/-    2.63      28.4 +/-    2.63  0.060 / 0.230
G14     64.1           39.3                9.1 +/-    0.91      13.4 +/-    0.91  0.060 / 0.210
G16     161.3          22.4               10.7 +/-    2.27      22.2 +/-    2.27  0.040 / 0.040
G22     294.9          71.6                8.9 +/-    1.26       9.3 +/-    1.26  0.030 / 0.040
G23     290.8          23.4                8.3 +/-    1.37      16.8 +/-    1.37  0.040 / 0.120
G26     131.0          42.0               11.4 +/-    1.02      16.0 +/-    1.02  0.050 / 0.100
G31     40.4           53.0                7.4 +/-    0.39       9.1 +/-    0.39  0.060 / 0.050
G32     81.7           19.4                9.0 +/-    0.86      20.1 +/-    0.86  0.050 / 0.040