PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-19:57:50
G07     56.6           67.6               12.9 +/-    0.86      13.8 +/-    0.86  0.050 / 0.030
G08     52.5           41.0               11.2 +/-    1.43      16.1 +/-    1.43  0.040 / 0.030
G09     179.1          40.9               16.2 +/-    0.70      23.2 +/-    0.70  0.340 / 0.280
G11     120.3          34.0               15.0 +/-    0.82      24.3 +/-    0.82  0.310 / 0.290
G17     198.7          12.6               14.9 +/-    2.27      39.2 +/-    2.27  0.130 / 0.090
G18     104.2          14.9               13.4 +/-    2.43      33.3 +/-    2.43  0.150 / 0.090
G23     160.9          11.7               14.9 +/-    2.49      40.0 +/-    2.49  0.070 / 0.070
G27     38.2           11.7               10.2 +/-    2.69      27.3 +/-    2.69  0.070 / 0.060
G28     266.9          47.7               14.1 +/-    3.11      18.3 +/-    3.11  0.030 / 0.040
G30     329.8          58.5               12.0 +/-    0.62      13.8 +/-    0.62  0.040 / 0.040