PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-01:28:00
G10     255.9          32.2               10.7 +/-    2.53      18.0 +/-    2.53  0.070 / 0.100
G13     48.3           25.4                8.6 +/-    1.74      16.7 +/-    1.74  0.060 / 0.100
G15     73.8           55.0                9.0 +/-    0.75      10.7 +/-    0.75  0.060 / 0.050
G16     291.4          14.8                7.2 +/-    1.96      17.9 +/-    1.96  0.040 / 0.040
G20     278.4          54.2               10.5 +/-    3.14      12.6 +/-    3.14  0.090 / 0.350
G21     341.9          64.0               10.1 +/-    0.63      11.1 +/-    0.63  0.100 / 0.310
G26     263.6          13.1                9.5 +/-    1.68      24.8 +/-    1.68  0.190 / 0.200
G29     164.3          42.1               11.0 +/-    1.10      15.5 +/-    1.10  0.060 / 0.170