PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-18:57:40
G02     216.9          60.3               10.2 +/-    1.20      11.6 +/-    1.20  0.120 / 0.220
G06     56.8           74.2                8.4 +/-    0.63       8.7 +/-    0.63  0.110 / 0.250
G12     317.8          34.7                7.2 +/-    1.46      11.5 +/-    1.46  0.050 / 0.070
G17     56.4           33.4                7.6 +/-    2.00      12.5 +/-    2.00  0.050 / 0.050
G19     40.9           47.8                7.8 +/-    1.14      10.1 +/-    1.14  0.090 / 0.080
G24     264.5          41.2               10.5 +/-    2.37      14.9 +/-    2.37  0.120 / 0.080
G28     121.4          18.1                8.6 +/-    1.07      19.8 +/-    1.07  0.070 / 0.090