PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-01:27:50
G10     247.7          25.7                9.6 +/-    1.86      18.4 +/-    1.86  0.040 / 0.050
G13     56.2           30.6                8.2 +/-    1.13      14.2 +/-    1.13  0.030 / 0.070
G15     91.4           57.4                9.3 +/-    0.58      10.8 +/-    0.58  0.070 / 0.140
G16     300.6          15.0                5.0 +/-    1.27      12.4 +/-    1.27  0.080 / 0.120
G20     265.7          48.5                9.7 +/-    1.01      12.4 +/-    1.01  0.130 / 0.460
G21     330.2          57.6                7.6 +/-    0.79       8.8 +/-    0.79  0.110 / 0.480
G26     272.3          16.6               10.1 +/-    2.49      24.2 +/-    2.49  0.060 / 0.160
G29     161.5          52.1                8.8 +/-    0.95      10.8 +/-    0.95  0.060 / 0.170