PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/14-20:58:10
G01     126.7          11.4               -3.4 +/-   50.67      -9.3 +/-   50.67  0.080 / 0.080
G07     65.0           66.9               14.9 +/-    0.59      16.0 +/-    0.59  0.070 / 0.080
G08     49.6           38.0               11.9 +/-    0.67      17.9 +/-    0.67  0.030 / 0.040
G09     178.5          36.9               17.8 +/-    1.32      27.3 +/-    1.32  0.030 / 0.040
G11     116.4          36.0               16.2 +/-    0.67      25.2 +/-    0.67  0.130 / 0.530
G13     320.9          12.3               -1.1 +/-   24.62      -2.9 +/-   24.62  0.120 / 0.350
G17     198.9          16.2               18.2 +/-    1.30      44.0 +/-    1.30  0.180 / 0.320
G18     100.6          16.6               15.1 +/-    1.94      36.1 +/-    1.94  0.120 / 0.360
G28     272.0          50.0               14.7 +/-    1.17      18.6 +/-    1.17  0.030 / 0.040
G30     333.3          61.0               14.2 +/-    0.99      16.0 +/-    0.99  0.030 / 0.050