PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/18-10:58:00
G01     305.1          35.3                4.0 +/-    1.11       6.3 +/-    1.11  0.080 / 0.120
G10     108.3          37.3                5.3 +/-    1.51       8.1 +/-    1.51  0.080 / 0.120
G11     278.2          28.0                2.5 +/-    0.95       4.6 +/-    0.95  0.080 / 0.100
G14     3.3            65.7                3.5 +/-    0.80       3.8 +/-    0.80  0.090 / 0.090
G18     270.4          51.0                4.5 +/-    0.83       5.6 +/-    0.83  0.050 / 0.070
G20     121.9          12.3                4.7 +/-    1.78      12.6 +/-    1.78  0.050 / 0.080
G22     311.8          32.1                2.3 +/-    1.68       3.9 +/-    1.68  0.040 / 0.070
G25     79.4           16.6                2.9 +/-    1.18       6.8 +/-    1.18  0.040 / 0.070
G31     165.7          66.5                6.3 +/-    1.02       6.8 +/-    1.02  0.080 / 0.200
G32     32.5           55.0                4.1 +/-    0.38       4.9 +/-    0.38  0.060 / 0.210