PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-18:12:50
G01     122.9          14.3               24.0 +/-    1.14      60.7 +/-    1.14  0.020 / 0.040
G07     79.2           63.9               12.9 +/-    0.33      14.2 +/-    0.33  0.030 / 0.040
G08     47.3           35.4               10.2 +/-    0.45      16.0 +/-    0.45  0.050 / 0.080
G09     178.4          32.7               14.4 +/-    1.84      23.9 +/-    1.84  0.050 / 0.070
G11     111.7          38.4               14.0 +/-    1.11      21.0 +/-    1.11  0.030 / 0.040
G13     319.4          16.1                9.3 +/-    2.24      22.6 +/-    2.24  0.030 / 0.040
G17     199.9          19.6               15.6 +/-    2.15      34.6 +/-    2.15  0.150 / 0.360
G18     97.3           18.6               12.0 +/-    1.11      27.2 +/-    1.11  0.180 / 0.310
G28     277.8          51.8               13.9 +/-    1.04      17.1 +/-    1.04  0.090 / 0.260
G30     341.6          65.9               11.8 +/-    0.48      12.8 +/-    0.48  0.110 / 0.280