PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-14:27:40
G03     189.6          23.5                7.0 +/-    2.74      14.2 +/-    2.74  0.080 / 0.160
G07     289.2          40.1                8.3 +/-    0.69      12.0 +/-    0.69  0.110 / 0.200
G08     144.9          23.6               11.3 +/-    1.60      22.9 +/-    1.60  0.040 / 0.090
G09     320.4          56.1                7.7 +/-    1.27       9.0 +/-    1.27  0.050 / 0.080
G16     45.9           46.2                7.8 +/-    0.66      10.3 +/-    0.66  0.060 / 0.090
G23     86.8           82.2                8.6 +/-    0.69       8.7 +/-    0.69  0.060 / 0.090
G26     43.5           17.5                7.5 +/-    0.64      17.6 +/-    0.64  0.040 / 0.060
G27     107.5          31.0                9.6 +/-    1.28      16.4 +/-    1.28  0.030 / 0.070
G30     270.7          11.5                6.1 +/-    4.92      16.5 +/-    4.92  0.030 / 0.030