PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-01:58:00
G02     7.9            72.7               10.5 +/-    0.54      10.9 +/-    0.54  0.050 / 0.080
G05     159.3          41.4               13.3 +/-    0.75      19.0 +/-    0.75  0.080 / 0.050
G06     43.7           33.9                9.4 +/-    2.02      15.2 +/-    2.02  0.030 / 0.030
G12     293.8          77.0               10.6 +/-    0.80      10.9 +/-    0.80  0.020 / 0.020
G17     90.1           11.1               11.6 +/-    2.27      31.7 +/-    2.27  0.050 / 0.060
G19     80.9           24.0               11.4 +/-    1.58      22.8 +/-    1.58  0.050 / 0.060
G24     223.4          17.9               13.5 +/-    2.66      31.3 +/-    2.66  0.120 / 0.510
G25     315.8          34.3                9.8 +/-    1.00      15.8 +/-    1.00  0.190 / 0.380
G29     291.1          12.5               11.6 +/-    1.30      30.6 +/-    1.30  0.080 / 0.110