PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-00:12:30
G02     203.8          38.6                9.9 +/-    1.00      14.7 +/-    1.00  0.080 / 0.080
G06     164.9          69.5                9.7 +/-    0.47      10.2 +/-    0.47  0.070 / 0.100
G12     308.0          15.3                5.4 +/-    2.24      13.4 +/-    2.24  0.080 / 0.240
G17     39.8           45.8                7.0 +/-    0.74       9.4 +/-    0.74  0.140 / 0.280
G19     7.0            63.5                7.9 +/-    0.53       8.7 +/-    0.53  0.060 / 0.120
G24     292.7          40.5                9.4 +/-   10.56      13.6 +/-   10.56  0.080 / 0.110
G28     103.3          32.6                9.2 +/-    1.24      15.2 +/-    1.24  0.040 / 0.030