PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-19:12:30
G02     207.8          45.1               12.5 +/-    0.69      16.8 +/-    0.69  0.100 / 0.120
G06     117.2          78.5               12.0 +/-    0.67      12.2 +/-    0.67  0.080 / 0.140
G12     313.9          26.5               10.3 +/-    0.94      19.5 +/-    0.94  0.060 / 0.070
G17     45.2           42.1               10.1 +/-    1.10      14.2 +/-    1.10  0.080 / 0.070
G19     16.9           59.8               11.1 +/-    1.03      12.6 +/-    1.03  0.040 / 0.060
G24     283.1          42.4               17.4 +/-    1.06      24.4 +/-    1.06  0.050 / 0.060
G28     112.4          23.6               12.1 +/-    1.28      24.4 +/-    1.28  0.040 / 0.040