PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/28-01:28:10
G01     37.8           10.6                6.2 +/-    2.94      17.2 +/-    2.94  0.100 / 0.160
G02     199.3          15.4                9.8 +/-    2.25      24.1 +/-    2.25  0.070 / 0.110
G06     177.8          42.3               11.1 +/-    1.21      15.5 +/-    1.21  0.040 / 0.030
G13     231.0          17.4                9.2 +/-    1.82      21.5 +/-    1.82  0.030 / 0.030
G17     17.7           63.1                8.2 +/-    0.74       9.1 +/-    0.74  0.110 / 0.220
G19     298.9          71.1                8.3 +/-    0.63       8.7 +/-    0.63  0.130 / 0.240
G24     312.3          27.1                7.8 +/-    1.55      14.6 +/-    1.55  0.060 / 0.060
G28     77.8           45.8                9.1 +/-    1.02      12.2 +/-    1.02  0.060 / 0.060
G30     156.2          20.4               10.8 +/-    1.85      23.5 +/-    1.85  0.210 / 0.260