PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-08:57:30
G10     262.8          36.5                7.4 +/-    1.08      11.4 +/-    1.08  0.040 / 0.040
G13     43.8           20.8                3.8 +/-    2.12       8.2 +/-    2.12  0.040 / 0.040
G15     63.2           50.9                4.5 +/-    0.99       5.6 +/-    0.99  0.080 / 0.070
G16     288.6          12.5                4.5 +/-    1.40      12.0 +/-    1.40  0.070 / 0.080
G20     290.5          58.5                5.6 +/-    1.26       6.5 +/-    1.26  0.250 / 0.400
G21     4.2            70.8                4.4 +/-    0.51       4.6 +/-    0.51  0.210 / 0.300
G24     122.1          12.1                5.2 +/-    2.78      13.9 +/-    2.78  0.100 / 0.220
G27     321.1          13.7                1.8 +/-    2.01       4.6 +/-    2.01  0.190 / 0.310
G29     164.3          30.7                4.8 +/-    1.45       8.2 +/-    1.45  0.220 / 0.240