PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-04:12:30
G10     251.3          28.5               10.7 +/-    2.19      19.3 +/-    2.19  0.040 / 0.050
G13     52.4           28.5                5.0 +/-    1.07       9.0 +/-    1.07  0.040 / 0.040
G15     82.4           56.5                7.6 +/-    0.72       8.9 +/-    0.72  0.060 / 0.170
G16     297.8          14.6                6.6 +/-    3.05      16.7 +/-    3.05  0.060 / 0.170
G20     271.4          51.5                8.3 +/-    0.96      10.3 +/-    0.96  0.060 / 0.100
G21     336.9          61.3                8.7 +/-    0.63       9.8 +/-    0.63  0.060 / 0.120
G26     269.4          15.0                9.9 +/-    1.23      24.7 +/-    1.23  0.030 / 0.040
G29     162.2          45.8                9.1 +/-    0.42      12.2 +/-    0.42  0.030 / 0.040