PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/01-03:27:50
G02     9.0            72.5                4.8 +/-    0.45       5.0 +/-    0.45  0.020 / 0.030
G05     159.3          41.4                8.5 +/-    0.61      12.1 +/-    0.61  0.030 / 0.030
G06     43.5           34.7                4.2 +/-    1.32       6.7 +/-    1.32  0.040 / 0.050
G12     295.1          76.4                5.3 +/-    0.94       5.5 +/-    0.94  0.050 / 0.050
G17     90.3           10.5                6.2 +/-    4.00      17.1 +/-    4.00  0.070 / 0.060
G19     81.1           23.6                4.8 +/-    2.07       9.8 +/-    2.07  0.080 / 0.100
G24     223.6          18.0                8.2 +/-    1.91      18.9 +/-    1.91  0.150 / 0.410
G25     315.8          34.2                3.5 +/-    1.05       5.6 +/-    1.05  0.200 / 0.330
G29     291.3          12.9                6.7 +/-    2.54      17.5 +/-    2.54  0.060 / 0.120