PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/21-15:12:50
G01     292.2          40.4               15.7 +/-    7.03      22.6 +/-    7.03  0.080 / 0.070
G03     311.9          18.1                7.6 +/-    2.29      17.5 +/-    2.29  0.060 / 0.090
G10     118.7          28.6               11.6 +/-    1.27      20.9 +/-    1.27  0.040 / 0.040
G11     264.8          26.0                7.3 +/-    2.82      14.0 +/-    2.82  0.050 / 0.050
G14     24.0           58.9                9.0 +/-    0.72      10.3 +/-    0.72  0.060 / 0.040
G18     248.8          48.3                9.7 +/-    5.53      12.5 +/-    5.53  0.050 / 0.050
G22     314.2          39.6                6.8 +/-    1.27      10.0 +/-    1.27  0.080 / 0.080
G25     65.5           17.6                9.2 +/-    1.26      21.5 +/-    1.26  0.090 / 0.120
G31     151.0          77.0               10.6 +/-    0.60      10.8 +/-    0.60  0.070 / 0.080
G32     47.0           45.6                7.4 +/-    1.01       9.9 +/-    1.01  0.070 / 0.050