PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-22:12:50
G01     86.2           32.2                8.7 +/-    1.06      14.6 +/-    1.06  0.050 / 0.050
G07     128.6          37.8               10.2 +/-    0.58      15.4 +/-    0.58  0.040 / 0.050
G11     63.5           37.8                9.5 +/-    1.14      14.3 +/-    1.14  0.060 / 0.110
G13     290.4          37.6                9.3 +/-    3.93      14.1 +/-    3.93  0.050 / 0.130
G15     312.7          11.6                6.0 +/-    4.08      16.3 +/-    4.08  0.040 / 0.040
G17     215.8          58.4               11.0 +/-    1.14      12.7 +/-    1.14  0.030 / 0.050
G18     57.9           21.6                8.3 +/-    1.36      17.5 +/-    1.36  0.030 / 0.020
G19     215.5          29.7               11.1 +/-    3.64      19.6 +/-    3.64  0.030 / 0.020
G28     346.8          61.7                8.1 +/-    0.50       9.1 +/-    0.50  0.160 / 0.190
G30     114.4          73.3               10.3 +/-    0.38      10.7 +/-    0.38  0.150 / 0.130