PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-22:13:10
G02     223.8          67.7               15.1 +/-    1.12      16.2 +/-    1.12  0.040 / 0.070
G06     45.6           66.6               11.4 +/-    0.52      12.3 +/-    0.52  0.030 / 0.070
G12     320.8          43.9               11.2 +/-    1.18      15.3 +/-    1.18  0.050 / 0.080
G17     62.1           30.0               11.2 +/-    0.93      19.6 +/-    0.93  0.060 / 0.090
G19     45.9           45.8               10.7 +/-    0.55      14.3 +/-    0.55  0.040 / 0.050
G24     255.3          39.3               17.2 +/-    1.20      25.4 +/-    1.20  0.050 / 0.050